File:Laboratory sieves BMK.jpg|thumb|right|Metal sifters
File:Ami shakushi.Scoop.jpg|thumb|An ''ami shakushi'', a Japanese ladle or scoop that may be used to remove small drops of batter during the frying of ''tempura''
A '''sieve''', or '''sifter''', is a device for separating wanted elements from unwanted material or for characterizing the particle size distribution of a sample, typically using a woven screen such as a mesh or net or metal.
The word "sift" derives from "sieve". In cooking, a sifter is used to separate and break up clumps in dry ingredients such as flour
, as well as to aerate and combine them. A '''strainer''' is a form of sieve used to separate solids from liquid.